KMXP5000

KMXP SERIES Anisotropic Magneto-Resistive (AMR) Linear Position Sensors Position sensors play an increasingly important role in many industrial, robotic and medical applications. Advanced applications in harsh environments need sensors that perform well, even when exposed to oil, dirt and dust. The TE Connectivity KMXP position sensor is the right choice to meet those needs thanks to its Magneto Resistive technology and available form factors. The KMXP sensor provides greater precision than commonly used Hall sensors and is designed to provide reliable and accurate measurements in harsh environments including high temperatures. The sensor measuring principle is based on the anisotropic magneto resistance effect (AMR effect). The sensors are offered in two different DFN packages for multiple orientation options. These packages can be easily integrated to almost any automated assembly process. FEATURES  High Resolution and high precision – Magneto Resistive (MR) sensor with contactless measurement which provides accuracy of 10-50 µm in ranges between 1 – 5 mm. Easy Assembly – DFN package ideal for any PCB assembly processes. Tape & Reel packaging for easy integration Design Freedom – Perpendicular or flat soldering versions and a small sensor wall thickness for large application air gaps. Superior Performance – Up to 150°C, EMC proof in any dirty environment and insensitive to dirt, oil or dust.     APPLICATIONS Contactless linear or angular position measurement in applications like:    Industrial machinery like sawing or drilling equipment Medical high precision mechanical controls like bed control, advanced prosthesis steering, precision catheters, X-ray equipment, or syringe pumps Robotics in industrial automation SENSOR SOLUTIONS /// KMXP Linear Position Sensor 05/2018 Page 1 KMXP LINEAR POSITION SENSOR MEASUREMENT PRINCIPLE Figure 1: principle function of the sensor The KMXP sensors consist of two magneto resistive Wheatstone bridges, whose resistors are placed in a such way that the characteristic magnetic field distribution of a magnetic scale with matching pole pitch produces a sine and a cosine signal output when the sensor is moved along the scale. Figure 2: typical application of a PCB mounted KMXP sensor moving relative to a magnetic pole and the corresponding output signal voltage depending on sensor position SENSOR SOLUTIONS /// KMXP Linear Position Sensor 05/2018 Page 2 KMXP LINEAR POSITION SENSOR PERFORMANCE SPECIFICATIONS PARAMETER SYMBOL COND. TYPE MIN TYP M AX UNIT 1. Operating Limits Max. supply voltage Vcc,max all 10 V Max. current (both bridges) Icc,max KMXP 1000 KMXP 2000/5000 5 10 mA Operating temperature Top all -40 +150 Storage temperature Tst all -40 +150 C C 2. Sensor Specifications (T=25 °C) Supply voltage Vcc all 5 V 1000 2000 5000 µm Pole pitch 1) p KMXP 1000 KMXP 2000 KMXP 5000 Air gap package front – magnetic scale 2) D KMXP 1000 KMXP 2000 KMXP 5000 0.1 0.2 0.5 0.4 0.8 2 0.8 1.8 4 mm Rb KMXP 1000 KMXP 2000/5000 2000 1000 3000 1500 4000 2000  Resistance (both bridges) Vn/Vcc A, B all 18 22 26 mV/V Vn off A, B all -1 0 +1 mV/V TC of amplitude TCSV A, C All -0.35 %/K TC of resistance TCBR A, C All +0.35 %/K TC of offset TCVoff A, C all Output signal range Offset voltage 3. Sensor Specifications -4 0 +4 µV/V/K n = 1;2 (bridge number); Stress above one or more of the limiting values may cause permanent damage to the device. Exposure to limiting values for extended periods may affect device reliability. 1) Other pole pitches on request 2) Typical values for conventional magnetic scales. Air gap for maximum accuracy depends on the used scale . SENSOR SOLUTIONS /// KMXP Linear Position Sensor 05/2018 Page 3 KMXP LINEAR POSITION SENSOR MEASUREMENT SET UP CONDITIONS PARAMETER SYMBOL UNIT CONDITION T °C T = 25 °C (unless otherwise noted) Vcc V Vcc = 5 V H kA/m A. Set Up Conditions Ambient temperature Supply voltage Applied magnetic field H > 10 kA/m B. Sensor Specifications (T=25 °C, 360° turn , H=25 kA/m , Vomax>0, Vomin